CN104292181A - Method for concentrating acesulfame potassium mother liquor by adopting MVR system - Google Patents

Method for concentrating acesulfame potassium mother liquor by adopting MVR system Download PDF

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Publication number
CN104292181A
CN104292181A CN201410501488.6A CN201410501488A CN104292181A CN 104292181 A CN104292181 A CN 104292181A CN 201410501488 A CN201410501488 A CN 201410501488A CN 104292181 A CN104292181 A CN 104292181A
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acesulfame potassium
mother liquor
mixed liquor
concentration
concentrating
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CN201410501488.6A
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CN104292181B (en
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王从春
周睿
刘刚
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Anhui Jinhe Industrial Co Ltd
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Anhui Jinhe Industrial Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D291/00Heterocyclic compounds containing rings having nitrogen, oxygen and sulfur atoms as the only ring hetero atoms
    • C07D291/02Heterocyclic compounds containing rings having nitrogen, oxygen and sulfur atoms as the only ring hetero atoms not condensed with other rings
    • C07D291/06Six-membered rings

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  • Organic Chemistry (AREA)
  • Saccharide Compounds (AREA)
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Abstract

The invention relates to a method for concentrating acesulfame potassium mother liquor by adopting an MVR system. The method for concentrating the acesulfame potassium mother liquor by adopting the MVR system comprises the following steps: a, putting refined and saturated acesulfame potassium mother liquor into a cold sugar water tank by virtue of potential difference, cyclically mixing the mother liquor with cold sugar water, pumping the obtained mixed liquor into a preheater to be preheated, and then feeding the preheated mixed liquor into a heater; b, when temperature of mixed liquor is increased to 63-67 DEG C, feeding the mixed liquor into a primary concentration kettle at a uniform speed, circulating the mixed liquor between the heater and the primary concentration kettle, and controlling temperature of the mixed liquor to be 70-75 DEG C; c, after primary concentration reaction is carried out for 5.5-6.5 hours, pumping the primarily concentrated mixed liquor into a second concentration kettle to be subjected to secondary concentration, and controlling temperature to be 75-80 DEG C; and d, carrying out concentration reaction for 8.5-9.5 hours to generate acesulfame potassium crystal mixed liquor, crystallizing the acesulfame potassium crystal mixed liquor by virtue of a precooling kettle and a crystallizing machine, and centrifuging, so that an acesulfame potassium crude product is obtained. The method for concentrating the acesulfame potassium mother liquor by adopting the MVR system has the advantages that vapour consumption is greatly reduced, and production time is shortened, so that cost is reduced, and market competitiveness of the acesulfame potassium product is improved.

Description

A kind of MVR system concentrates the method for acesulfame potassium mother liquor
Technical field
The invention belongs to foodstuff additive chemical technology field, relate to a kind of method that MVR system concentrates acesulfame potassium mother liquor.
Background technology
Acesulfame potassium is a kind of foodstuff additive, can increase food sweet taste, and mouthfeel is good, empty calory, has not metabolism in human body, does not absorb, and is the elderly, adiposis patient, sweeting agent that diabetic subject is desirable.After current acesulfame potassium production method is mainly and is utilized by saturated acesulfame potassium mother liquor steam heating concentrated, cool and centrifugally obtain thick product, then again with in and the raw sugar of cold syrup condensation that obtains of workshop section mix, enter recrystallization workshop section.This method needs two step condensations, consumes a large amount of steam, causes the waste of the energy, improves production cost.
Summary of the invention
The object of the invention is to solve the problem that in existing acesulfame potassium concentration process, steam consumption is excessive, provide a kind of MVR system to concentrate the method for acesulfame potassium mother liquor.
MVR system concentrates a method for acesulfame potassium mother liquor, it is characterized in that comprising the following steps:
A. acesulfame potassium is refined saturated mother liquor and put into cold syrup groove by potential difference, circulating with cold syrup mixes, and squeezes into preheater preheats, then send into well heater after mixing by pump;
B. when mixeding liquid temperature rises to 63 DEG C-67 DEG C, average rate sends into once concentration still, is circulated by mixed solution by forced circulation pump between well heater and once concentration still, and controlling mixeding liquid temperature is 70 DEG C ~ 75 DEG C;
After c once concentration reaction 5.5 ~ 6.5h terminates, material is squeezed into secondary concentration still and carry out secondary concentration, control still temperature 75 DEG C ~ 80 DEG C;
D., after the concentration response time of 8.5-9.5h, the acesulfame potassium crystallization mixture of generation, after precooling still, crystallizer crystallization, centrifugally obtains acesulfame potassium crude product.
On technique scheme basis, there is following further improvement project:
The steam produced in once concentration still is all recycled to well heater by vapour compressor and carries out second stage employ.
The invention has the advantages that and shorten the production time, save concentrated required steam, thus reduce production cost, improve production efficiency and product quality.
Accompanying drawing explanation
Fig. 1 is former concentrated acesulfame potassium mother liquor method flow diagram;
Fig. 2 is that MVR system concentrates acesulfame potassium mother liquor method flow diagram.
Embodiment
Embodiment 1
The cold syrup that in front workshop section and post produces enters syrup groove, then by pump by cold syrup 20m 3squeeze into cold syrup tempering tank, and put into 5m from refinement mother liquor header tank 3refinement mother liquor enters cold syrup tempering tank, ON cycle pump, by preheater circulating-heating, when mixeding liquid temperature rises to 65 DEG C, all squeezes into hot syrup groove (according to said method, repeating to join hot mixed solution), and by dnockout pump by preheated mixed solution (25m 3) squeeze into once concentration system and do bed material.ON cycle pump circulates, and opens vacuum pump evacuation, controls vacuum tightness-0.072Mpa, keeps once concentration still still temperature 73 DEG C.Open vapour compressor sprinkling system and oil piping system again, open compressor, load by little be adjusted to gradually maximum.By preheated mixed solution with 7.2m 3the speed of/h squeezes into once concentration system, the reaction times: 6.05h, enters syrup and mother liquor mixture 68.6m altogether 3.After once concentration reaction terminates, secondary concentration system all squeezed into by material, by the hydronics of secondary concentration, carries out secondary concentration, controls secondary concentration still still temperature 78 DEG C; The secondary concentration end time is: 3.15h.Before and after through the concentration response time of 9.2h, the acesulfame potassium crystallization mixture of generation, after precooling still, crystallizer crystallization, centrifugally obtains 7.8T acesulfame potassium crude product.In concentration process, the phlegma 58.2m of extraction 3whole Hui Qian workshop sections production line uses.
Embodiment 2
The cold syrup that in front workshop section and post produces enters syrup groove, then by pump by cold syrup 20m 3squeeze into cold syrup tempering tank, and put into 5m from refinement mother liquor header tank 3refinement mother liquor enters cold syrup tempering tank, ON cycle pump, by preheater circulating-heating, when mixeding liquid temperature rises to 67 DEG C, all squeezes into hot syrup groove (according to said method, repeating to join hot mixed solution), and by dnockout pump by preheated mixed solution (25m 3) squeeze into once concentration system and do bed material.ON cycle pump circulates, and opens vacuum pump evacuation, controls vacuum tightness-0.072Mpa, keeps once concentration still still temperature 72 DEG C.Open vapour compressor sprinkling system and oil piping system again, open compressor, load by little be adjusted to gradually maximum.By preheated mixed solution with 7.4m 3the speed of/h squeezes into once concentration system, the reaction times: 5.95h, enters syrup and mother liquor mixture 69.1m altogether 3.After once concentration reaction terminates, secondary concentration system all squeezed into by material, by the hydronics of secondary concentration, carries out secondary concentration, controls secondary concentration still still temperature 76 DEG C; The secondary concentration end time is: 3.15h.Before and after through the concentration response time of 9.1h, the acesulfame potassium crystallization mixture of generation, after precooling still, crystallizer crystallization, centrifugally obtains 8.2T acesulfame potassium crude product.In concentration process, the phlegma 59.1m of extraction 3whole Hui Qian workshop sections production line uses.
Two kinds of production method parameter lookup table
From synopsis, novel method of the present invention improves production capacity, substantially reduces the product cycle, improves steam utilization and productive rate, serves substantial effect to production.

Claims (2)

1. MVR system concentrates a method for acesulfame potassium mother liquor, it is characterized in that comprising the following steps:
A. acesulfame potassium is refined saturated mother liquor and put into cold syrup groove by potential difference, circulating with cold syrup mixes, and squeezes into preheater preheats, then send into well heater after mixing;
B. when mixeding liquid temperature rises to 63 DEG C-67 DEG C, average rate sends into once concentration still, is circulated by mixed solution between well heater and once concentration still, and controlling mixeding liquid temperature is 70 DEG C ~ 75 DEG C;
C., after once concentration reaction 5.5 ~ 6.5h terminates, material is squeezed into secondary concentration still and carry out secondary concentration, control temperature is 75 DEG C ~ 80 DEG C;
D. through the concentration response time of 8.5-9.5h, the acesulfame potassium crystallization mixture of generation, after precooling still, crystallizer crystallization, centrifugally obtains acesulfame potassium crude product.
2. a kind of MVR system according to claim 1 concentrates the method for acesulfame potassium mother liquor, it is characterized in that, the steam produced in once concentration still is all recycled to well heater by vapour compressor and carries out second stage employ.
CN201410501488.6A 2014-09-27 2014-09-27 A kind of MVR system concentrates the method for acesulfame potassium mother solution Active CN104292181B (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10023546B2 (en) 2016-09-21 2018-07-17 Celanese International Corporation Acesulfame potassium compositions and processes for producing same
US10029998B2 (en) 2016-09-21 2018-07-24 Celanese International Corporation Acesulfame potassium compositions and processes for producing same
US10030000B2 (en) 2016-09-21 2018-07-24 Celanese International Corporation Acesulfame potassium compositions and processes for producing same
US10029999B2 (en) 2016-09-21 2018-07-24 Celanese International Corporation Acesulfame potassium compositions and processes for producing same
CN109045744A (en) * 2018-08-30 2018-12-21 山东亚邦化工科技有限公司 The method and apparatus for preparing acesulfame potassium crystallization of continuous-stable
CN109078359A (en) * 2018-08-30 2018-12-25 山东亚邦化工科技有限公司 A kind of technique and device for acesulfame potassium sulfonation hydrolysis liquid continuous extration
CN109369572A (en) * 2018-10-25 2019-02-22 苏州浩波科技股份有限公司 A kind of purifying process of acesulfame potassium
CN109593071A (en) * 2018-12-10 2019-04-09 安徽金禾实业股份有限公司 A kind of continuous controllable acesulfame potassium recrystallization centrifugal device and method
CN110818654A (en) * 2019-12-20 2020-02-21 安徽金禾实业股份有限公司 Optimized acesulfame crystallization method
CN110846443A (en) * 2019-11-16 2020-02-28 安徽金禾实业股份有限公司 Method for optimizing crystallization by back extraction of acesulfame-K syrup
CN112110875A (en) * 2020-09-26 2020-12-22 安徽金禾实业股份有限公司 Preheating method for mother liquor in heavy material boiling section
CN112221179A (en) * 2020-09-26 2021-01-15 安徽金禾实业股份有限公司 Spraying method of secondary concentration kettle in acesulfame potassium production
CN112480033A (en) * 2020-11-30 2021-03-12 安徽金禾实业股份有限公司 Method for two-stage continuous concentration of sugar water in acesulfame potassium production
USRE48464E1 (en) 2012-06-08 2021-03-16 Celanese Sales Germany Gmbh Process for producing acesulfame potassium
CN112592325A (en) * 2020-11-28 2021-04-02 安徽金禾实业股份有限公司 Method and device for recovering potassium salt in acesulfame potassium crystallization waste liquid
CN115677620A (en) * 2022-11-17 2023-02-03 安徽金禾实业股份有限公司 Method for treating coarse mother liquor in acesulfame potassium production
CN115710236A (en) * 2022-11-17 2023-02-24 安徽金禾实业股份有限公司 Method for continuously concentrating sugar water in acesulfame potassium production

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US10029999B2 (en) 2016-09-21 2018-07-24 Celanese International Corporation Acesulfame potassium compositions and processes for producing same
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CN109045744B (en) * 2018-08-30 2021-04-27 山东亚邦化工科技有限公司 Method and device for continuously and stably preparing acesulfame potassium crystals
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CN109078359B (en) * 2018-08-30 2020-11-06 山东亚邦化工科技有限公司 Process and device for continuous extraction of acesulfame potassium sulfonated hydrolysate
CN109078359A (en) * 2018-08-30 2018-12-25 山东亚邦化工科技有限公司 A kind of technique and device for acesulfame potassium sulfonation hydrolysis liquid continuous extration
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CN110846443A (en) * 2019-11-16 2020-02-28 安徽金禾实业股份有限公司 Method for optimizing crystallization by back extraction of acesulfame-K syrup
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CN112221179A (en) * 2020-09-26 2021-01-15 安徽金禾实业股份有限公司 Spraying method of secondary concentration kettle in acesulfame potassium production
CN112110875A (en) * 2020-09-26 2020-12-22 安徽金禾实业股份有限公司 Preheating method for mother liquor in heavy material boiling section
CN112592325A (en) * 2020-11-28 2021-04-02 安徽金禾实业股份有限公司 Method and device for recovering potassium salt in acesulfame potassium crystallization waste liquid
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